- (noun) date of the Allied landing in France, World War II
- (noun) the day, June 6, 1944, on which the Allied invasion of Europe began
- (noun) the day on which any large-scale operation is planned to start
"Listed below are links to weblogs that reference d-day:"
"Two weeks after d-day, we were the fighter squadron on a strip that was built there after a bad day attack on this German Panzer division, seeing innocent civilians massacred."
"You'd have to wait for that to grow out so if you're sentenced to the guillotine, you can be certain you'll look your very best on d-day."
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